 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.ide.dialogs;

 import org.eclipse.core.resources.IProject;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jface.wizard.IWizard;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.ui.ICapabilityUninstallWizard;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.internal.ide.IDEWorkbenchMessages;
 import org.eclipse.ui.internal.ide.IDEWorkbenchPlugin;
 import org.eclipse.ui.internal.ide.registry.Capability;
 import org.eclipse.ui.internal.ide.registry.CapabilityRegistry;

 /**
  * Represents the removal of a capability step in a multi-step
  * wizard.
  */
 public class RemoveCapabilityStep extends WizardStep {
     private Capability capability;

     private String [] natureIds;

     private IProject project;

     private ICapabilityUninstallWizard wizard;

     /**
      * Creates the remove capability step
      *
      * @param number step order number
      * @param capability the capability to be removed
      * @param natureIds the list of nature ids to remove on the project
      * @param project the project to remove the capability from
      */
     public RemoveCapabilityStep(int number, Capability capability,
             String [] natureIds, IProject project) {
         super(number);
         this.capability = capability;
         this.natureIds = natureIds;
         this.project = project;
     }

     /* (non-Javadoc)
      * Method declared on WizardStep.
      */
     public String getLabel() {
         return NLS.bind(IDEWorkbenchMessages.RemoveCapabilityStep_label, capability.getName());
     }

     /* (non-Javadoc)
      * Method declared on WizardStep.
      */
     public String getDetails() {
         String details = capability.getUninstallDetails();
         if (details == null) {
             if (natureIds.length == 1) {
                 details = NLS.bind(IDEWorkbenchMessages.RemoveCapabilityStep_defaultDescription0, capability.getName());
             } else if (natureIds.length == 2) {
                 CapabilityRegistry reg = IDEWorkbenchPlugin.getDefault()
                         .getCapabilityRegistry();
                 Capability otherCapability = reg
                         .getCapabilityForNature(natureIds[1]);
                 if (otherCapability == capability)
                     otherCapability = reg.getCapabilityForNature(natureIds[0]);
                 details = NLS.bind(IDEWorkbenchMessages.RemoveCapabilityStep_defaultDescription1, capability.getName(), otherCapability.getName());
             } else {
                 StringBuffer msg = new StringBuffer ();
                 CapabilityRegistry reg = IDEWorkbenchPlugin.getDefault()
                         .getCapabilityRegistry();
                 for (int i = 0; i < natureIds.length; i++) {
                     Capability cap = reg.getCapabilityForNature(natureIds[i]);
                     if (cap != capability) {
                         msg.append("\n "); //$NON-NLS-1$
 msg.append(cap.getName());
                     }
                 }
                 details = NLS.bind(IDEWorkbenchMessages.RemoveCapabilityStep_defaultDescription2, capability.getName(), msg);
             }
         }

         return details;
     }

     /* (non-Javadoc)
      * Method declared on WizardStep.
      */
     public IWizard getWizard() {
         if (wizard == null) {
             wizard = capability.getUninstallWizard();
             if (wizard == null)
                 wizard = new RemoveCapabilityWizard();
             if (wizard != null) {
                 wizard.init(PlatformUI.getWorkbench(),
                         StructuredSelection.EMPTY, project, natureIds);
                 wizard.addPages();
             }
         }

         return wizard;
     }

 }

